Why does the stick of the hammer look like rubber? If the hammer is supposed to be heavy then the stick should be strong enough to hold the (metal?) part of the hammer which means that it shouldn't bend.

Also, I think you should change the guys legs. Just imagine yourself standing like that for an hour, not good for your knees.  Nice job so far though.

The animation is so... uh... stopped.
The arms don't move, the feet....

But, the pixelart is good.